28 Nov 2007, 14:24 (Ref:2077295)
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#1
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Veteran
Join Date: Nov 2005
Posts: 1,406
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Grooved cylinder heads
check this link out
http://somender-singh.com/content/view/7/31/
and this one
http://www.gofastnews.com/board/engi...9.html#post552
looks like a nice little cheap tuning modification for 2 valve per cylinder engines
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